Growth mechanism and mnorphology of melt-texture-growth-processed YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} with different presintered microstructures
- ISMRA/Universite de CAEN, Centre des Materiaux Supraconducteurs, F-14050 CAEN cedex (France)
This work deals with the influence of the starting Y-123 grain size on the growth mechanism and final microstructure of the melt-textured YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital x}} ceramics. Observations of the growth front morphology and stability for the different precursors using several decomposition temperatures are correlated with the theoretical equations. It is found that the final 211 inclusion size increases as the starting 123 grain size increases. However, using a small-grained 123 precursor disrupts the growth front and makes the control of grain alignment difficult. An appropriate morphology of the 123 precursor should be chosen prior to the MTG process in order to obtain the best properties. {copyright} {ital 1996 Materials Research Society.}
- OSTI ID:
- 399776
- Journal Information:
- Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 11 Vol. 11; ISSN JMREEE; ISSN 0884-2914
- Country of Publication:
- United States
- Language:
- English
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